About my major which is Sustainable Development

I think my major(Sustainable Development) might be boring and hard to understand for some people
because I might may not be able to explain what it is very well about that.
However, I will try to do it today.

Over the last several decades, people have consumed a lot of natural resources and produced pollutants due to human activities such as industrial operation and transportation.
As a result Therefore, nowadays people have are faced with significant environmental issues: global warming, acid rain, and biodiversity and so forth. (<em>Use commas instead of multiple "and"s when listing things. In English only use "and" in lists, between the second last and last item in your list.)</em>

Thus, People have realised that if we keep consuming natural resources they will be all used up someday because they are limited. there is a limit on nature.
Then, Sustainable Development was created to reduce the impact of these negative outcomes. come up with.
While When we study about Sustainable Development, we need to think about how we preserve the environment and how we should behave toward the environment proceeding economy and social development.

I am sorry I cannot explain this well, because I'm still learning about the topic.

Thank you for reading my sentences.
If you have time, please correct them

<em>(I have studyed Sustainabilty as part of my Engineering Degree. I find it very interesting. You have explained the basics very well. Well done~)</em>